Howmet Research Corporation
89Patents
1Active
89Granted
37Portfolio score
Filing activity: Feb 16, 1994 → Jul 20, 2009 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6021840A | Vacuum die casting of amorphous alloys | Performing Operations; Transporting | 76 | Expired |
| US6626230B1 | Multi-wall core and process | Performing Operations; Transporting | 70 | Expired |
| US5658614A | Platinum aluminide CVD coating method | Chemistry; Metallurgy | 64 | Expired |
| US5856027A | Thermal barrier coating system with intermediate phase bondcoat | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5788823A | Platinum modified aluminide diffusion coating and method | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6129991A | Aluminide/MCrAlY coating system for superalloys | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6072568A | Thermal barrier coating stress measurement | Physics | 32 | Expired |
| US6347660B1 | Multipiece core assembly for cast airfoil | Performing Operations; Transporting | 31 | Expired |
| US6070643A | High vacuum die casting | Performing Operations; Transporting | 31 | Expired |
| US5989733A | Active element modified platinum aluminide diffusion coating and CVD coating method | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6505678B2 | Ceramic core with locators and method | Performing Operations; Transporting | 29 | Expired |
| US5679270A | Method for removing ceramic material from castings using caustic medium with oxygen getter | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5915452A | Apparatus for removing cores from castings | Performing Operations; Transporting | 26 | Expired |
| US7093645B2 | Ceramic casting core and method | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US6120624A | Nickel base superalloy preweld heat treatment | Chemistry; Metallurgy | 25 | Expired |
| US7234506B2 | Ceramic casting core and method | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6578623B2 | Ceramic core and method of making | Performing Operations; Transporting | 24 | Expired |
| US5977007A | Erbia-bearing core | Performing Operations; Transporting | 24 | Expired |
| US6291014A | Active element modified platinum aluminide diffusion coating and CVD coating method | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6689422B1 | CVD codeposition of A1 and one or more reactive (gettering) elements to form protective aluminide coating | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6474348B1 | CNC core removal from casting passages | Performing Operations; Transporting | 22 | Expired |
| US6589668B1 | Graded platinum diffusion aluminide coating | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5931214A | Mold heating vacuum casting furnace | Performing Operations; Transporting | 20 | Expired |
| US6231692A | Nickel base superalloy with improved machinability and method of making thereof | Chemistry; Metallurgy | 19 | Expired |
| US6132520A | Removal of thermal barrier coatings | Emerging Cross-Sectional Technologies | 19 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.